aboutsummaryrefslogtreecommitdiff
path: root/include/exec/cpu_ldst.h
blob: fd499f7e2ff2bc244941c877b739da4f7797cefa (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
/*
 *  Software MMU support
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, see <http://www.gnu.org/licenses/>.
 *
 */

/*
 * Generate inline load/store functions for all MMU modes (typically
 * at least _user and _kernel) as well as _data versions, for all data
 * sizes.
 *
 * Used by target op helpers.
 *
 * The syntax for the accessors is:
 *
 * load: cpu_ld{sign}{size}_{mmusuffix}(env, ptr)
 *
 * store: cpu_st{sign}{size}_{mmusuffix}(env, ptr, val)
 *
 * sign is:
 * (empty): for 32 and 64 bit sizes
 *   u    : unsigned
 *   s    : signed
 *
 * size is:
 *   b: 8 bits
 *   w: 16 bits
 *   l: 32 bits
 *   q: 64 bits
 *
 * mmusuffix is one of the generic suffixes "data" or "code", or
 * (for softmmu configs)  a target-specific MMU mode suffix as defined
 * in target cpu.h.
 */
#ifndef CPU_LDST_H
#define CPU_LDST_H

#if defined(CONFIG_USER_ONLY)
/* sparc32plus has 64bit long but 32bit space address
 * this can make bad result with g2h() and h2g()
 */
#if TARGET_VIRT_ADDR_SPACE_BITS <= 32
typedef uint32_t abi_ptr;
#define TARGET_ABI_FMT_ptr "%x"
#else
typedef uint64_t abi_ptr;
#define TARGET_ABI_FMT_ptr "%"PRIx64
#endif

/* All direct uses of g2h and h2g need to go away for usermode softmmu.  */
#define g2h(x) ((void *)((unsigned long)(abi_ptr)(x) + guest_base))

#if HOST_LONG_BITS <= TARGET_VIRT_ADDR_SPACE_BITS
#define guest_addr_valid(x) (1)
#else
#define guest_addr_valid(x) ((x) <= GUEST_ADDR_MAX)
#endif
#define h2g_valid(x) guest_addr_valid((unsigned long)(x) - guest_base)

static inline int guest_range_valid(unsigned long start, unsigned long len)
{
    return len - 1 <= GUEST_ADDR_MAX && start <= GUEST_ADDR_MAX - len + 1;
}

#define h2g_nocheck(x) ({ \
    unsigned long __ret = (unsigned long)(x) - guest_base; \
    (abi_ptr)__ret; \
})

#define h2g(x) ({ \
    /* Check if given address fits target address space */ \
    assert(h2g_valid(x)); \
    h2g_nocheck(x); \
})
#else
typedef target_ulong abi_ptr;
#define TARGET_ABI_FMT_ptr TARGET_ABI_FMT_lx
#endif

#if defined(CONFIG_USER_ONLY)

extern __thread uintptr_t helper_retaddr;

static inline void set_helper_retaddr(uintptr_t ra)
{
    helper_retaddr = ra;
    /*
     * Ensure that this write is visible to the SIGSEGV handler that
     * may be invoked due to a subsequent invalid memory operation.
     */
    signal_barrier();
}

static inline void clear_helper_retaddr(void)
{
    /*
     * Ensure that previous memory operations have succeeded before
     * removing the data visible to the signal handler.
     */
    signal_barrier();
    helper_retaddr = 0;
}

/* In user-only mode we provide only the _code and _data accessors. */

#define MEMSUFFIX _data
#define DATA_SIZE 1
#include "exec/cpu_ldst_useronly_template.h"

#define DATA_SIZE 2
#include "exec/cpu_ldst_useronly_template.h"

#define DATA_SIZE 4
#include "exec/cpu_ldst_useronly_template.h"

#define DATA_SIZE 8
#include "exec/cpu_ldst_useronly_template.h"
#undef MEMSUFFIX

/*
 * Code access is deprecated in favour of translator_ld* functions
 * (see translator.h). However there are still users that need to
 * converted so for now these stay.
 */
#define MEMSUFFIX _code
#define CODE_ACCESS
#define DATA_SIZE 1
#include "exec/cpu_ldst_useronly_template.h"

#define DATA_SIZE 2
#include "exec/cpu_ldst_useronly_template.h"

#define DATA_SIZE 4
#include "exec/cpu_ldst_useronly_template.h"

#define DATA_SIZE 8
#include "exec/cpu_ldst_useronly_template.h"
#undef MEMSUFFIX
#undef CODE_ACCESS

#else

/* The memory helpers for tcg-generated code need tcg_target_long etc.  */
#include "tcg.h"

static inline target_ulong tlb_addr_write(const CPUTLBEntry *entry)
{
#if TCG_OVERSIZED_GUEST
    return entry->addr_write;
#else
    return atomic_read(&entry->addr_write);
#endif
}

/* Find the TLB index corresponding to the mmu_idx + address pair.  */
static inline uintptr_t tlb_index(CPUArchState *env, uintptr_t mmu_idx,
                                  target_ulong addr)
{
    uintptr_t size_mask = env_tlb(env)->f[mmu_idx].mask >> CPU_TLB_ENTRY_BITS;

    return (addr >> TARGET_PAGE_BITS) & size_mask;
}

static inline size_t tlb_n_entries(CPUArchState *env, uintptr_t mmu_idx)
{
    return (env_tlb(env)->f[mmu_idx].mask >> CPU_TLB_ENTRY_BITS) + 1;
}

/* Find the TLB entry corresponding to the mmu_idx + address pair.  */
static inline CPUTLBEntry *tlb_entry(CPUArchState *env, uintptr_t mmu_idx,
                                     target_ulong addr)
{
    return &env_tlb(env)->f[mmu_idx].table[tlb_index(env, mmu_idx, addr)];
}

#ifdef MMU_MODE0_SUFFIX
#define CPU_MMU_INDEX 0
#define MEMSUFFIX MMU_MODE0_SUFFIX
#define DATA_SIZE 1
#include "exec/cpu_ldst_template.h"

#define DATA_SIZE 2
#include "exec/cpu_ldst_template.h"

#define DATA_SIZE 4
#include "exec/cpu_ldst_template.h"

#define DATA_SIZE 8
#include "exec/cpu_ldst_template.h"
#undef CPU_MMU_INDEX
#undef MEMSUFFIX
#endif

#if (NB_MMU_MODES >= 2) && defined(MMU_MODE1_SUFFIX)
#define CPU_MMU_INDEX 1
#define MEMSUFFIX MMU_MODE1_SUFFIX
#define DATA_SIZE 1
#include "exec/cpu_ldst_template.h"

#define DATA_SIZE 2
#include "exec/cpu_ldst_template.h"

#define DATA_SIZE 4
#include "exec/cpu_ldst_template.h"

#define DATA_SIZE 8
#include "exec/cpu_ldst_template.h"
#undef CPU_MMU_INDEX
#undef MEMSUFFIX
#endif

#if (NB_MMU_MODES >= 3) && defined(MMU_MODE2_SUFFIX)

#define CPU_MMU_INDEX 2
#define MEMSUFFIX MMU_MODE2_SUFFIX
#define DATA_SIZE 1
#include "exec/cpu_ldst_template.h"

#define DATA_SIZE 2
#include "exec/cpu_ldst_template.h"

#define DATA_SIZE 4
#include "exec/cpu_ldst_template.h"

#define DATA_SIZE 8
#include "exec/cpu_ldst_template.h"
#undef CPU_MMU_INDEX
#undef MEMSUFFIX
#endif /* (NB_MMU_MODES >= 3) */

#if (NB_MMU_MODES >= 4) && defined(MMU_MODE3_SUFFIX)

#define CPU_MMU_INDEX 3
#define MEMSUFFIX MMU_MODE3_SUFFIX
#define DATA_SIZE 1
#include "exec/cpu_ldst_template.h"

#define DATA_SIZE 2
#include "exec/cpu_ldst_template.h"

#define DATA_SIZE 4
#include "exec/cpu_ldst_template.h"

#define DATA_SIZE 8
#include "exec/cpu_ldst_template.h"
#undef CPU_MMU_INDEX
#undef MEMSUFFIX
#endif /* (NB_MMU_MODES >= 4) */

#if (NB_MMU_MODES >= 5) && defined(MMU_MODE4_SUFFIX)

#define CPU_MMU_INDEX 4
#define MEMSUFFIX MMU_MODE4_SUFFIX
#define DATA_SIZE 1
#include "exec/cpu_ldst_template.h"

#define DATA_SIZE 2
#include "exec/cpu_ldst_template.h"

#define DATA_SIZE 4
#include "exec/cpu_ldst_template.h"

#define DATA_SIZE 8
#include "exec/cpu_ldst_template.h"
#undef CPU_MMU_INDEX
#undef MEMSUFFIX
#endif /* (NB_MMU_MODES >= 5) */

#if (NB_MMU_MODES >= 6) && defined(MMU_MODE5_SUFFIX)

#define CPU_MMU_INDEX 5
#define MEMSUFFIX MMU_MODE5_SUFFIX
#define DATA_SIZE 1
#include "exec/cpu_ldst_template.h"

#define DATA_SIZE 2
#include "exec/cpu_ldst_template.h"

#define DATA_SIZE 4
#include "exec/cpu_ldst_template.h"

#define DATA_SIZE 8
#include "exec/cpu_ldst_template.h"
#undef CPU_MMU_INDEX
#undef MEMSUFFIX
#endif /* (NB_MMU_MODES >= 6) */

#if (NB_MMU_MODES >= 7) && defined(MMU_MODE6_SUFFIX)

#define CPU_MMU_INDEX 6
#define MEMSUFFIX MMU_MODE6_SUFFIX
#define DATA_SIZE 1
#include "exec/cpu_ldst_template.h"

#define DATA_SIZE 2
#include "exec/cpu_ldst_template.h"

#define DATA_SIZE 4
#include "exec/cpu_ldst_template.h"

#define DATA_SIZE 8
#include "exec/cpu_ldst_template.h"
#undef CPU_MMU_INDEX
#undef MEMSUFFIX
#endif /* (NB_MMU_MODES >= 7) */

#if (NB_MMU_MODES >= 8) && defined(MMU_MODE7_SUFFIX)

#define CPU_MMU_INDEX 7
#define MEMSUFFIX MMU_MODE7_SUFFIX
#define DATA_SIZE 1
#include "exec/cpu_ldst_template.h"

#define DATA_SIZE 2
#include "exec/cpu_ldst_template.h"

#define DATA_SIZE 4
#include "exec/cpu_ldst_template.h"

#define DATA_SIZE 8
#include "exec/cpu_ldst_template.h"
#undef CPU_MMU_INDEX
#undef MEMSUFFIX
#endif /* (NB_MMU_MODES >= 8) */

#if (NB_MMU_MODES >= 9) && defined(MMU_MODE8_SUFFIX)

#define CPU_MMU_INDEX 8
#define MEMSUFFIX MMU_MODE8_SUFFIX
#define DATA_SIZE 1
#include "exec/cpu_ldst_template.h"

#define DATA_SIZE 2
#include "exec/cpu_ldst_template.h"

#define DATA_SIZE 4
#include "exec/cpu_ldst_template.h"

#define DATA_SIZE 8
#include "exec/cpu_ldst_template.h"
#undef CPU_MMU_INDEX
#undef MEMSUFFIX
#endif /* (NB_MMU_MODES >= 9) */

#if (NB_MMU_MODES >= 10) && defined(MMU_MODE9_SUFFIX)

#define CPU_MMU_INDEX 9
#define MEMSUFFIX MMU_MODE9_SUFFIX
#define DATA_SIZE 1
#include "exec/cpu_ldst_template.h"

#define DATA_SIZE 2
#include "exec/cpu_ldst_template.h"

#define DATA_SIZE 4
#include "exec/cpu_ldst_template.h"

#define DATA_SIZE 8
#include "exec/cpu_ldst_template.h"
#undef CPU_MMU_INDEX
#undef MEMSUFFIX
#endif /* (NB_MMU_MODES >= 10) */

#if (NB_MMU_MODES >= 11) && defined(MMU_MODE10_SUFFIX)

#define CPU_MMU_INDEX 10
#define MEMSUFFIX MMU_MODE10_SUFFIX
#define DATA_SIZE 1
#include "exec/cpu_ldst_template.h"

#define DATA_SIZE 2
#include "exec/cpu_ldst_template.h"

#define DATA_SIZE 4
#include "exec/cpu_ldst_template.h"

#define DATA_SIZE 8
#include "exec/cpu_ldst_template.h"
#undef CPU_MMU_INDEX
#undef MEMSUFFIX
#endif /* (NB_MMU_MODES >= 11) */

#if (NB_MMU_MODES >= 12) && defined(MMU_MODE11_SUFFIX)

#define CPU_MMU_INDEX 11
#define MEMSUFFIX MMU_MODE11_SUFFIX
#define DATA_SIZE 1
#include "exec/cpu_ldst_template.h"

#define DATA_SIZE 2
#include "exec/cpu_ldst_template.h"

#define DATA_SIZE 4
#include "exec/cpu_ldst_template.h"

#define DATA_SIZE 8
#include "exec/cpu_ldst_template.h"
#undef CPU_MMU_INDEX
#undef MEMSUFFIX
#endif /* (NB_MMU_MODES >= 12) */

#if (NB_MMU_MODES > 12)
#error "NB_MMU_MODES > 12 is not supported for now"
#endif /* (NB_MMU_MODES > 12) */

/* these access are slower, they must be as rare as possible */
#define CPU_MMU_INDEX (cpu_mmu_index(env, false))
#define MEMSUFFIX _data
#define DATA_SIZE 1
#include "exec/cpu_ldst_template.h"

#define DATA_SIZE 2
#include "exec/cpu_ldst_template.h"

#define DATA_SIZE 4
#include "exec/cpu_ldst_template.h"

#define DATA_SIZE 8
#include "exec/cpu_ldst_template.h"
#undef CPU_MMU_INDEX
#undef MEMSUFFIX

/*
 * Code access is deprecated in favour of translator_ld* functions
 * (see translator.h). However there are still users that need to
 * converted so for now these stay.
 */

#define CPU_MMU_INDEX (cpu_mmu_index(env, true))
#define MEMSUFFIX _code
#define SOFTMMU_CODE_ACCESS

#define DATA_SIZE 1
#include "exec/cpu_ldst_template.h"

#define DATA_SIZE 2
#include "exec/cpu_ldst_template.h"

#define DATA_SIZE 4
#include "exec/cpu_ldst_template.h"

#define DATA_SIZE 8
#include "exec/cpu_ldst_template.h"

#undef CPU_MMU_INDEX
#undef MEMSUFFIX
#undef SOFTMMU_CODE_ACCESS

#endif /* defined(CONFIG_USER_ONLY) */

/**
 * tlb_vaddr_to_host:
 * @env: CPUArchState
 * @addr: guest virtual address to look up
 * @access_type: 0 for read, 1 for write, 2 for execute
 * @mmu_idx: MMU index to use for lookup
 *
 * Look up the specified guest virtual index in the TCG softmmu TLB.
 * If we can translate a host virtual address suitable for direct RAM
 * access, without causing a guest exception, then return it.
 * Otherwise (TLB entry is for an I/O access, guest software
 * TLB fill required, etc) return NULL.
 */
#ifdef CONFIG_USER_ONLY
static inline void *tlb_vaddr_to_host(CPUArchState *env, abi_ptr addr,
                                      MMUAccessType access_type, int mmu_idx)
{
    return g2h(addr);
}
#else
void *tlb_vaddr_to_host(CPUArchState *env, abi_ptr addr,
                        MMUAccessType access_type, int mmu_idx);
#endif

#endif /* CPU_LDST_H */